Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27d30b0cbb86017…

MALICIOUS

PDF

72.2 KB Created: 2020-08-12 13:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad7ed9d38b6746b53de540638869a8ff SHA-1: 688b6ea555afca3080ca03d7efade07408004cde SHA-256: c27d30b0cbb860170027a35e30f6cb800ca8e359c6e85828295f10e58ef85157
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the target URL, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=abu+hamid+al+ghazali+livre+pdf
    • http://files.westtexasguitarfestival.com/uploads/1/3/0/7/130740517/9439314.pdf
    • http://tukalesol.hopemdunbar.com/uploads/1/3/0/7/130775795/kaninugaruxef-vizor-sewobugupugover.pdf
    • http://files.gmroofcleaning.co.uk/uploads/1/3/0/7/130739489/rarijalatunividorut.pdf
    • http://files.bulverdepregnancy.net/uploads/1/3/1/8/131857717/0a3c24.pdf
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/nys_notary_exam_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/wekuwirufulutafaminazul.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/bokujalasesajel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/nesasifovexowiludovof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5250/7036/files/29459613663.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/bogulowosi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/92327392883.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/86470406507.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/27609932427.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/alistair_begg_books.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c676.bin
4590ef2f50367d0130704cd99af748056248ffadd9c13c7243025ca3efb2867a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC676 5516 bytes
font_01_sfnt_off0000d921.bin
be91bb120f4c42e9ad1614a5d47a4e6bc48d8d4c6e9f072c762ba1ffd10348b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 10360 bytes
font_02_sfnt_off0000fca1.bin
f962580c1d98906c835a6f3990d380033f5e8988c38f7986cad092fad2748877		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA1 16508 bytes

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